Joint for the eye-wires of ophthalmic mountings



Dec. 13, 1.932. J, J, POMERANZ E1- A| v 1,891,176

JOINT FOR THE EYE WIRES 0F oPHTHALMIc MoUNTINGs Filed July 1. 1951lNvENToRs Jaco Jlgomel'anz BY Vncenmasso bz I - Y ATTORNEYS l PatentedDec. 13, 1932 UNETED# STAT ES PTENT OFFICJ JACOB J'. POMERANZ, OFBROOKLYN, AND VINCENT. IAN.itSSO,l 0F HARRISON,

NEW' YORK f JOINT FOR THE EYE-WIRES F OPH'IHALMIC'MOUNTINGS Applicationfiled July 1,

This invention relates to ophthalmic mountings, and refers moreparticularly to an improved joint for connnecting the ends of eye-wires,and which improvement is applicable to the screw tube joints of Oxfordor eyeglass frames, the end pieces of spectacle frames or the like.

In so far as is known, eye-wire oints have heretofore invariablyconsisted of mating screw receiving elements having` abutting relationwith the headed end of the connecting screw freely extending through oneof said elements and having threaded anchorage in the other element.

' In order to improve joints of this nature, the present inventioncomprehends the formation of an extension on that element of the jointwithin which the screw is threadedly anchored, which extension isdesigned to telescopically fit within the other element so as to act asan aligning guide for maintaining the ends of the eye-wire in properjuxtaposition while the same is circumferentially expanded7 to afford amore secure oint, to provide a longer threaded engagement for the screwand to relieve the screw of strains and stresses.

Other objects of the invention reside in the comparative simplicity ofconstruction of the joint, the economy with which the same may beproduced and the general etiiciency derived therefrom.

With the above recited and other objects in view, reference is had tothe following description and accompanying drawing, in which there areexhibited several examples or embodiments of the invention, while theclaims deiine the actual scope of the same.

In the drawing:

' Figure 1 is a collective perspective View illustrating the jointcompletely separated and the retaining screw removed.

Figure 2 is a longitudinal sectional View through the joint,illustrating` the same in the fully connected condition.

Figure 3 is a similar View illustrating the joint partially separated.

Figure l is a fragmentary sectional View illustrating a differentapplication of the joint,

1931.v Serial No. 548,180.

Figure 5 is a longitudinal sectional viewU through a joint showing amodified adaptation of the invention.

F igureti is a transverse sectional view taken approximately on the line6-'6 of '5,5 Figure 5.

Referring to the'drawing by characters of reference, 10 and 11designate-respectively the opposite ends of the eye-wire of an Oxi fordframe, which in the present instance is 6G provided with thescrew tubejointr sections l2 and 13, in which the latter is providedW with portionor extension 14'of reduced diameter which protrudes from the end 15 of-L the main body 13 of said section which con- 65 W fronts and abuts withthe'end 16 of the section 12. rIhe external diameter of ythe *eX--Atension or portion 14 is of a size to snugly* iit within the bore 17 ofthe section 12 but--- f (A is of lesser length than the length of the*7Usection 12. In practice, the section 13 and its extension 14 may beformed integral or as separate nested pieces properly secured -together.The section 13 has a threaded bore 18 extending axially therethroughandv 7a through the extension la'for receiving the threaded shank 19 ofa retaining screw having the usual kerfed head 20, which head is of asize to bear against the outer endv of the section 12 for the purpose ofdrawing the S9 sections 12 and 13 together. It is, of course,- 4 obviousthat if desired, the head 20 of the"1 screw may be countersunk in theend of the section 12'.

In the modified form of the inventionillustrated in Figure 4, theopposite ends 21 and 22 of the eye-wire are providedwith the mat-1A ingend pieces 23 and 24, which may serveas a mounting for the usual templehars, and the end piece 24 in this instance is formed 9C with a tubularextension 25 which is snugly received in the bore 26 ofthe end piece 23,.l the extension and end piece 24 being provided with a threadedbore'2(- for receiving they 4 threaded shank 28 of the retaining screw95 j which is provided with the usual kerfed head 'f 29, in the presentinstance shown as counter:- sunk in the rabbeted portion 30. In .thisinstance, the extension 25 is of lesserlength than the `bore 26 so as topermit theiscrew to .1065;

fully draw the two end pieces and the ends of the eye-wire intocontacting relation.

As previously stated, this form of joint has many advantages over theordinary form of butt joint, in that it aords means to permit of a screwthreaded engagement of greater length than the butt joint, relieves theretaining screw oi' a considerable proportion of the stresses andstrains which would otherwise obtain, while the extension acts as analigning guide to facilitate the circumferential contraction andexpansion of the eyewire when emplacing or removing the lens.

Referring to the forni of the invention illustrated in Figures 5 and 6of the drawing, 3l and 32 designate respectively the opposite ends ofthe eye-wire of the Oxford frame, which in this instance is providedwith screw tube joint sections 33 and 34, the latter having formedintegral therewith a spring casing 35, the peripheral wall of which isopen as at 36 to receive the spring and one wall of which opening 36 isformed with a notch 37 for the reception of one terminal 88 of thespring 39, the opposite terminal 40 being designed to engage within thebridge spring knuckle (not shown). The screw tube joint section 33 has aclosed outer. end 41 and is formed at its inner end with an extension 42or reduced diameter, the section 41 and eX- tension 42 having acontinuous internally threaded bore 43. The section 34 has its inner endrecessed as at 44 to receive the extension 42, and said recesscommunicates with a nonthreaded bore 45 which freely receives thethreaded shank 4G of the retaining screw. The bore 45 communicates witha recess 47 which opens into the spring casing 35 and receives the head48 of the retaining screw which is inserted through the casing 35, afterwhich the spring 39 is emplaced to act as a retaining means forpreventing movement oi" the screw after the eye-wire has been contractedaround the lens.

Vhile there have been illustrated and described several preterred formsof the invention, no limitation is necessarily intended to the precisestructural details except as restricted by the appended claims.

`What is claimed is:

1. In an ophthalmic mounting, a oint for the ends of the eye-wires ofspring bridge Oxford frames including mating screw receiving elementscarried by the opposite ends of the eye-wire, one of said elementshaving a closed outer end and an extension at the inner endtelescopically fitting within the inner end of the other element, saidother element having a bridge spring casing at the outer end and a boreopening into the spring casing for receiving a retaining screw.

2. In an ophthalmic mounting, a joint for the ends of the eye-wires ofspring bric ge Oxford frames including mating screw receiving elementscarried by the opposite ends of the eye-wire, one of said elementshaving' displacement.

JACOB J. POMERANZ. VINCENT TANASSO.

